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http://acervodigital.unesp.br/handle/11449/116685- Title:
- Effect of Ag nanoparticles on the radiative properties of tellurite glasses doped with Er3+, Yb3+ and Tm3+ ions
- Univ Fed Juiz de Fora
- Universidade Estadual Paulista (UNESP)
- Univ Caen
- 0925-3467
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
- Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
- The present work is devoted to the characterization of the thermal and spectroscopic properties of tellurite glasses, codoped with Er3+, Yb3+ and Tm3+ rare-earth ions and silver nanoparticles (NPs). The techniques used for this investigation were UV-visible and infrared absorption, time-resolved luminescence and thermal lens. Time-resolved luminescence studies indicate efficient Yb3+ --> Er3+ and Yb3+ --> Tm3+ energy transfers and intense Er3+ and Tm3+ mid-infrared emissions around 1550 nm and 1860 nm, respectively. The presence NPs is found to increase the thermal diffusivity of the materials and to shorten the mid-infrared emission lifetime of both the Er3+ and Tm3+ ions. (C) 2014 Elsevier B.V. All rights reserved.
- 1-Nov-2014
- Optical Materials. Amsterdam: Elsevier Science Bv, v. 37, p. 281-286, 2014.
- 281-286
- Elsevier B.V.
- Glasses
- Metallic nanoparticles
- Rare earth ions
- Energy transfer
- Luminescence
- Thermal diffusivity
- http://dx.doi.org/10.1016/j.optmat.2014.06.009
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/116685
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